Change SYSTEM_DOCKER from niusmallnan/os-system-docker to rancher/os-system-docker
Change SYSTEM_DOCKER from niusmallnan/os-system-docker to rancher/os-system-docker

rancherio/os,rancher/os,ibuildthecloud/os,rancherio/os,rancherio/os,gizmotronic/os,ibuildthecloud/os,rancher/os,gizmotronic/os